(ベクトルの記号は省略します) なぜbを-bとする必要があるのでしょうか？ a=a+bとしてしまえば、出来ると思うのですが...

a 要 例題 20 内積と不等式 次の不等式を証明せよ。 là ơi là lời @) WEARTO SOLUTION 不等式の証明 ABO のとき AMBA'≦B2) (1) 内積の定義を利用するか, または成分を用いて証明する。 成分を用いて証明 するときは, labps (al||) を示す。 まず、右側の不等式 la +6|≦la|+|6| を証明する。途中, (1) の結果が利用 できる部分がある。左側の不等式|al-16|≦a+6は、先に示した右側の不 等式を利用して示すとよい。 (2) |ā|-|õ|≤|ã+õ|≤|ā|+|õ| pik a·b|=|a|||| cos 0|≤|ã ||6|| よって, laba|||が成り立つ。楽 a=(a, b), b=(c, d) 232 (ARIO (alb)²—à•6³²= (a²+b²)(c²+d²)−(ac+bd)² **_0>\ =a²d²+b²c²-2acbd=(ad-bc)² ≥0 I α = 0 または 6=0 のとき, α・6=0,la||6|=0 であるから (1) 条件a=1 または la-b=alb 0」の否定は 060 のとき, a とのなす角を0とすると 「ad かつ60」 a = |a|||cose, -1≦cos0≦1 よって (al a≧0,|a|||≧0であるから la.bl≤allb (2) (1) 5 (a+b)²-|ã+6³² は実数であ= ++20+1万円) = =2(a || b-a.b) ≥0 2013 ゆえにa+a+16D² 2016≧0であるから |ã+b|≤|ã|+|b| •····· 1 p.352 基本事項1 inf. la b≤lab|62 -la|b|≤a·b≤|a||b| と表すこともできる。 <la+61² |a³²³+2|a||6|+|6³²-(la²+2à·6+6³²) = (a + b)(a + b) (1) から ① において, a を a +6,を一言とすると |ã+b−b|≤|ã+b|+|−6| <√13- 2 ← | cos 01 365 等号が成り立つのは, a=0 または = 0 また an // のとき。 24667 13 à·b≤a·b|≤|ä||b| 023 THÁHOL EASTE ●幼児の手の届かないところに置 注いてください。 字消し以外に使用 しないでください。 使ったあとは、 このスリープに入れてください。 株式会社トンボ鉛筆 ベクトルの内積 スリープは再生紙です。 PVC フタル酸エステル不使用 Phthalate Free MADE IN VIETNAMAM £5? Tällä +61 +1B| 102k lal-16|≤|a+b\ 0.05 lal-16|≤|a+b|sa|+|b1 +6+6| をベクトルの三角不等式ということがある。 aories *CACIO

教えて欲しいです

Try it out! atnebuta egharloxo 1 ( )に入る適切な語を選びましょう。 不要であれば, 「×」を入れよう。 1. Please raise ( ) O your hand if you know the answer. 2. We discussed (threr events the problem at the meeting.ne ) 3. Some students objected ( 4. I never stay ( 5. The school festival lasted ( 6. He apologized ( ) his plan for the school festival. ) late. So I can get up early in the morning. ) for two days. ) the mistake he made during the play. to/up/ for / in

教えてください！

B例に倣って、()内の表現に続けなさい。 Where does she live? (I don't know) → I don't know where she lives. - 1. What was it? (She asked me) She asked me what it was. 2. How did he make the money? (I want to know) I want to know how he made the money 3. Why didn't Dick come to the party? (I wonder) I wonder Dick didn't come to the party? 4. Is the report true? (I don't know) 5. When will the show end? (Do you think) 473-16

最後のthemは何を指していますか？ あと2文目の和訳もして頂きたいです( . .)"

3 W Choose the best word or phrase and fill in each blank. (1) b/10/ We can ask questions and open up areas of their memories which would otherwise have been lost. But no special attempt was made by the interviewers to ( 1 ) them. 1 compromise 2 evoke if b3 issue ob boog 5. serve up al moeniot (USA) van of bachadashed The wealth that we get from economic growth does not (2) people over all — just a atau berlip wall arbloole

この計算の過程がわからないです！教えてください！

両辺を2乗すると MADE 1 1 1 + 2 √3 60 + =n2 3よって √3=32-2 1 ŠVE ここでは有理数であるから,3r²-2も有理数である。 ......

2.I said nothing ( ) made him angry. （私が黙っていたら彼は腹を立てた） カッコに入る答えが分かりません。解説と一緒に教えてほしいです。

英語です。 並び替えが分からないため解説お願いします🙇‍♀️

問い2 次の(A), (B)のそれぞれの英文の( )内の語を並べ換えて意味の通じる正し い文にするには、( )内にもう1話ずつ補わなければならない。 その補う べき語を下の中から選びなさい。 但し同じものを反復して選んではならない。 (A)(1) That was among the few books (kept, he, side, his). (2) It seems easier here to (heat, up, the, put) than in Kyoto. (3) Her good command of foreign languages (set, far, might, her) most of the students. (4) He left the window and (back, down, his, lay) on the bed again. (5) I had learned early in my career that (act, can, one, one's) will. (6) He turned his face (of, pursuit, if, in) the sun journeying westward. 1. above 2. against 3. as 4. by 5. on 6.with (B) (7)Many years of experience abroad (possible, me, to, it, made) start a new enterprise at home. (8) They were all astonished at the rapidity (he, speak, learned, to, which) BRA English. (9) A book which is worth reading at all (read, likely, be, to, is) than once. (10) Nuclear weapons leave us with (live, no, to, together, choice) or die together. (11) Much of (is, men, beneficial, what, all) has been done by those who neither intended nor knew the good they did. (12) Modern art is not so much concerned with portraying an object exactly as (the, to, appears, eye, it) with capturing its soul. 1. as 2. but 3. for 4. more 5. of 6. that 7. to 8. with

この本文の問題合ってますか。。！？😭

3 THE BIG DIPPER TIMES Kumamon Cheering for Notre-Dame On April 15, / fire damaged the Notre-Dame cathedral in Paris, / France. // To support the repair work, / Kumamoto Prefecture began the Kumamon Fund-raising Campaign. // They also sold special Kumamon Haruto, goods. // 5 20 An official of Kumamoto P dil adool nomsmul May 25, 2019 Coton sadness. // In 2016, / an earthquake hit Kumamoto / and damaged Snomsmul sis soillo (autoelenq olums Prefecture said, / “I understand French people's Kumamoto Castle. // At that time, / we received support / from around of min bi Kullan 10 8 the world. // It was a big help to us. // Sending money to France / is one first sly yum ni moj IBIG way / to return that kindness." // red about him Every year since 2013, / Kumamon has visited France / to promote Kumamoto Prefecture. // "He has appeared at local markets / and tourist Jan spots. // Kumamon made many friends / and built new links / between IOS KE Japan and France. // In 2017, / he worked / as the France Tourism Goodwill Ambassador. // (128 words)

1行目のthatは何のthatですか？ 同様に3行目のwhereは何のwhereですか？

out ✪ Gandhi was so strongly opposed to violence that at one point he 5 made up his mind to starve to death unless the fighting calmed down. He also looked forward to a united India where Hindus and Moslems could live together in peace. He was ready to take part in ramboro daun, asv off Chan

結局SVOOかSVOCか分かったところで何になるのですか？

10 VOO か VOCかはbe動詞でチェック S nove eow di brs Jo3#3 [1 33400 次の英文を訳しなさい 1960s, the communication satellite has made instantaneous global communication a reality. New technologies have transformed the mass media. Since the have bloode janw om niwelatha nobesup A people